It's one of the rear cryptocurrency and "blockchain" technologies that actually make sense to me. They have a simple structure: you are able to issue assets/tokens on the network and you are able to send and trade them for other tokens. I think that this simplicity allowed it to gain a lot of credibility with bigger companies (Stripe, IBM, now Keybase, ...), while other technologies like Bitcoin/Ethereum are getting just more and more complicated with 2nd layer networks and locking up tokens in them. They stayed true to the original ideas without introducing a bunch of buzzwords around them and trying to avoid hype in their announcements[2]:
> Our agreement with Keybase entails many practical Stellar-centric deliverables. Rather than giving out a list now and spinning up yet another crypto hype-cycle, we’ll announce products jointly with them as they’re completed or near completion. We know the Keybase team very well and expect they will create critical Stellar ecosystem components over the coming years.
[1] https://www.kalzumeus.com/2014/08/05/harry-potter-and-the-cr... [2] https://www.stellar.org/blog/keybase-and-stellar-partnership...